摘要
采用液相线铸造法即在液相线温度铸造变形铝合金２６１８获得了金属半固态加工要求的细小、等轴的“非枝晶”组织，同时考察了铸造温度、冷却速度及再加热温度和时间对该组织的影响·结果表明，在一定冷却速度条件下在液相线温度铸造能获得适合于半固态加工的细小球形晶粒，并且该组织在再加热回半固态仍能保持稳定·
Fine equiaxed nondendritic grains of primary microstructure needed by semi solid metal forming were obtained by means of liquidus casting a wrought aluminum alloy 2618 method,i.e. cast from its liquidus temperature. The influence of casting temperature,cooling rates,reheating temperature and time on liquidus casting microstructure was investigated. The fine global grains can be obtained by liquidus casting at a cooling rate and this kind of microstructure can still keep stable when it was reheated to semi solid state.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1999年第2期173-176,共4页
Journal of Northeastern University(Natural Science)
基金
辽宁省科委资助
关键词
铝合金
液相线铸造
冷却速度
显微组织
铸造
aluminum alloy,liquidus casting,cooling rates,casting temperature,reheating,microstructure.
